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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. 4-6 days






2. 19-23 (21) days






3. What about the sperm for a bull which has been castrated but still has testicles?






4. Front feet and head first. (except for hogs and dogs)






5. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total






6. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.






7. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.






8. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm






9. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge






10. Superior genes are _______ to multiply






11. Not under a timeline - cow can not be sold as steak






12. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.






13. 19-23 (21) days






14. Can survive ~7 days in cow. vast majority <48 hours






15. Implies the amount of estrogen production






16. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






17. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.






18. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.






19. (LH) causes female's egg to break (her period)






20. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co






21. FEED






22. Parturition is controlled by...






23. Animals which have many estrous periods per year (ex: cow - sow)






24. Look for infection - split - and rupture of the penis






25. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers






26. 2 month growth cycle. stored in the epididymis of the bull






27. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed






28. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.

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29. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has






30. 30 hours after estrus begins






31. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg






32. Actual heat cycle (period)






33. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.






34. Knife-loose ~1wk of growth. band-loose ~2wks of growth.






35. Urinary calculi.






36. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.






37. Why Dairy calves are fed powdered milk.






38. Animals which have only one estrous cycle (ex: dog - fox)






39. 26 hours after estrus begins






40. Animal which has been castrated after puberty






41. 1-2 days






42. Days which have decreasing daylight hours

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43. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood






44. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






45. 26 hours after estrus begins






46. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.






47. Contains and regulates the temp of the testes for sperm production






48. Duct through penis that carries sperm and urine






49. Help to signal hormone levels which we need both in the brain right next to each other.






50. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers